Damper



(No Model.)

J. SPEAR.

' DAMPER.

No. 280,411. Patented July 3, 1883.

dizz-niav".

UNITED STATES PATENT OFFICE.

JAMES SPEAR, OF PHILADELPHIA, PENNSYLVANIA.

DAMPER.

SPECIFICATION forming part of Letters Patent No. 280,411, dated July 3, 1883,

Application filed April 14, 1883.

To all whom it may concern:

Be it known that I, J AMES SPEAK, a citizen of the United States, residing at Philadelphia,

in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Backs and J ambs or Open Fire-Places, of which the following is aspeciiication. g

My invention relates to the manner of closing the opening into the chimney leading from what is known to the trade generally as backs and jainbs. To accomplish this I construct the upper part of the backs and jambs of fire places with two valves, the front one folding backward and upward and the back one folding forward and downward. \Vhen it is desirable to close the chimney-opening, the back valve is pulled downward to a horizontal position and the front valve is raised to the same horizontal position, thereby closing the opening to the chimney-throat and preventing the escape of heat up the chimney during extreme cold weather when the fire-place is not in use.

The mechanism employed is shown in the accompanying drawings, in which Figure 1 is a front view. Fig. 2 is a cross-section. Fig. 3 is also a cross-section, showing the front valve vertical and in use as a blower. Fig. 4 is a front perspective view. a

B is the back of the fire-place, and C C are the sides or jambs, held in place by the front frame, d. At the top of the front frame is (No model.)

placed the'front valve, G, pivoted at each end to the jambs or frame, so that its lower edge can swing on its pivots and the valve be placed in a vertical position as a blower, as shown in Fig. 3, or at an angle of forty-five degrees, to reflect the heat and light into the room, as seen in Fig. 2. It is retained at this angle by the bolts 6' being thrown out against the lugs 6 which are upon the side jambs. The rear valve, H, is pivoted similarly into theside jambs, and when. the fire is in place this valve -is raised to 'a vertical position, as in Fig. 2. \Vhen placed horizontal, its lugs h rest upon the side jambs.

WVhen the fire-place is not in use, the two valves G and H are placed horizontal, as shown by the dotted lines in Fi 2, thus effectually closing the opening to the chimney.

I claim In combination with backs and jambs or open fire-grates, the valve G, which can be lowered in a perpendicular position to act a blower, or raised to an angle of forty-f1ve degrees to act as a reflector, or placed in a horizontal position, which, in combination witlr the valve H, when said valve is turned forward, closes the throat of the chimney, substantially as herein described.

JAMES SPEAK. XVitnesses:

Enw. BROWN,

J OHN F. GRANT. 

